New Applications of the Image Grand Tour Jürgen Symanzik*, Utah State University, Logan, UT Edward J. Wegman, George Mason University Amy Braverman, Jet.

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Presentation transcript:

New Applications of the Image Grand Tour Jürgen Symanzik*, Utah State University, Logan, UT Edward J. Wegman, George Mason University Amy Braverman, Jet Propulsion Laboratory * WWW:

Overview n Pixel Tours and IGT n Example 1: Minefield n Example 2: MISR n Example 3: Petroglyphs n Conclusion

Image Grand Tour (IGT) n Wanted – A method to address: u Multispectral imagery u Satellite imagery various look angles u Multiple time series F Seismic Signals F Electrocardiograms n Our approach: Image Grand Tour n Original Developers: Wegman, Poston, Solka

Pixel Tours (1)

Pixel Tours (2)

Pixel Tours (3) n Possible Implementations: u Hypercube/Torus Tour u Random Interpolation Tour u Fractal Tour u Pseudo Grand Tour

Example 1: Minefield (1)

Example 1: Minefield (2)

Example 1: Minefield (3)

Example 1: Minefield (4) - Snapshot

Example 1: Minefield (5) - Movie IGT Movie: Minefield

Example 2: MISR (1) n MISR: Multi-angle Imaging SpectroRadiometer u On board of NASA’s Earth Observing System satellite Terra u 9 cameras (at 9 different angles): F 70.5, 60, 45, and 26.1 degrees (forward and aft), 0 degrees F 4 bands each: R, G, B, NIR u Pixels: 1.1km x 1.1 km

Example 2: MISR (2)

Example 2: MISR (3)

Example 2: MISR (4) n North coast of Alaska (incl. Arctic National Wildlife Refuge) n Ice: top - Land: bottom n RGB composite of nadir (0 degree) camera n Challenges: u Identifying clouds over ice and snow u Distinguishing among different types of ice (old/new, broken/solid) n Multi-angle - multi-spectral data allows such identification via IGT

Example 2: MISR (5)

Example 2: MISR (6) IGT Movie: MISR

Example 3: Petroglyphs (1) n Pictographs from Hueco Tanks State Historical Park (east of El Paso, TX) u Faded over centuries u Destroyed through vandalism n Current digital enhancement techniques time-consuming n Use of IGT: faster detection of hidden features n Photographs provided by Robert Mark

Example 3: Petroglyphs (2)

Example 3: Petroglyphs (3) IGT Movie: Petroglyphs 1

Example 3: Petroglyphs (4)

Example 3: Petroglyphs (5) IGT Movie: Petroglyphs 2

Example 3: Petroglyphs (6)

Discussion n IGT useful for multiple applications n Fast to find “interesting” features in images n Does not produce “nice” images n Static view and movie view of interest n Intended to add new functionality

Contact n Jürgen Symanzik u n Website u